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16. If the length of a beam is 20 feet long and the allowable deflection is one inch, what is the construction type? Only liv
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Answer #1

Unplastered roof construction. As per AISC for roof beams without plaster subjected to only live loads, maximum deflection is L/240.Since L=20 feet=240 inches.Therefore maximum allowable deflection is 1 inch.

For plastered roof construction the maximum allowable deflection is L/360.

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